A Writer's Transmigration With A System

Li Jiwen never expected to be in the position of a transmigrator like in the novels he used to write. And with a system? Hell, he thought he scored big and that this was his time to shine. The system bucketed him with ice as the first mission was nigh impossible, he must stop the heavenly calamity and survive! But not all hope was lost! The system gave him the ability to choose three things from any novel he wrote! Now whether he soars the Heavens or be forgotten in history... We shall know! — Description from novelcodex.org